Do they make cree night lights now?

You must be talking about this?

If pure white light is what you want that's fine. I've also heard that this phosphor technique could also lower the efficiency output of the LEDs? who knows. If you're just looking for reliability of life use, then I guess it's fine.

All the common hardware stores sell LED night lights...

Jamie

Not super bright ones, of 1-3 watts.

Then make up your mind (not that you started out well with the cross-posting).

A night light is not supposed to light up a room. It's supposed to provide a mild light so somebody doesn't stub their toe if they have to get up in the middle of the night. You don't want a bright light because you don't want it interrupting your sleep, but you also want it weak since otherwise your eyes have to adjust to the bright light from total darkness.

Light up a room is a different matter. It's regular lighting.

You can't get an answer until you actually define what you want.

Michael

They make fractional Watt LED night light bulb replacements. Walmart sells them.

I use a 1.5 W LED lamp at my gates and it is too bright for a night light.

Incandescent night lights use about 2 watts, that's all I'm asking in a LED one.

Really? Then look on Ebay.

watts != lumens. incandescents output more heat than light. thus their two watts is minimal light. not comparable with led's at all.

figure out how many lumens your night light outputs, then search for led's with /that/ figure, not wattage.

Walmart

ght

ED

A night-light incandescent lamp (less than 5 watts) has a luminous efficiency of less than 0.5%.

A lighting-class LED of less than 5 watts has luminous efficiency closer to 5% or 10%.

That would indicate that for the same number of lumens out, you probably want the LED to draw one tenth (or less) the power of an incandescent used in a similar application.

PAR-type LED spotlights are in the 3-4W power class and are way way too super bright to think about for night light use.

Wal-Mart and others sell LED night lights. I'd guesstimate that they put 10-15mA through a single blueish-white LED with a 3V drop and IMHO they are plenty bright. I tore one apart and it looks like they use series capacitance and some kind of transzorb in parallel with the LED, to start from 120V and at least somewhat efficiently limit current through the LED.

The above numbers are raw lumens/watt. A more important issue rather than raw lumens will be diffusing the LED to the point where it doesn't glare as a point source. The Wal-Mart LED night lights start with a diffused LED and then put a transluscent diffuser around it, and even then it's way more obviously a point source than the larger incandescent bulbs.

Yes you can.....................a monster LED with a big ceramic slab heatsink, controlled by a variable PWM so the illumination can be set to just what's required.